CAN't Install Anything!! help

#1
I need help. I am using windows 7 64bit. In the start every application that i
downloaded installed correctly. But suddenly it started showing problem. No
application is installing and dialogue box comes saying check your internet
connection and firewall settings. My internet connection is working good and to
check firewall settings i disabled it but still no programs or applications are
installing. Also updates of some programs are not working. (I am using eset
security). PLEASE HELP!!
 


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